Car lease bubble to burst?

It's the same all over Europe. No-one buys a car for cash any more. The roads are full of cars under five years old most of which seem to have been bought on retail leases, those three or five year deals with low or no deposit, low monthly lease cost but with punitive damage and mileage conditions and a vastly inflated bubble payment at the end of the term should drivers perversely want to buy their cars rather than take out a new lease. 

Here they all go for those vast-tyred monsters that come as close to looking like like a Humvee as road-legal cars can get. With thick chrome roll bars and Bengal plate slab decks. And they pretend they own them. 

What I can't understand is what the car makers' leasing companies, who presumably own all the three year old returned cars, actually do with them. If they released them all on the market then second hand prices would plummet with a tsunami of perfect condition pre-owned cars and fewer people would take the new lease options - so where are they? Shipped overseas? In some vast desert store like the entire 1970s USAF fleet of aircraft? I think we should be told.

For scale, the driver is standing under the front spoiler. Essential for the Munich school run.